1 /* $NetBSD: nouveau_dispnv50_lut.c,v 1.3 2021/12/19 10:49:47 riastradh Exp $ */ 2 3 /* 4 * Copyright 2018 Red Hat Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 #include <sys/cdefs.h> 25 __KERNEL_RCSID(0, "$NetBSD: nouveau_dispnv50_lut.c,v 1.3 2021/12/19 10:49:47 riastradh Exp $"); 26 27 #include "lut.h" 28 #include "disp.h" 29 30 #include <drm/drm_color_mgmt.h> 31 #include <drm/drm_mode.h> 32 #include <drm/drm_property.h> 33 34 #include <nvif/class.h> 35 36 #ifdef __NetBSD__ 37 #define __iomem __lut_iomem 38 #define readw(p) atomic_load_relaxed((const __iomem uint16_t *)(p)) 39 #define writew(v,p) atomic_store_relaxed((__iomem uint16_t *)(p), (v)) 40 #endif 41 42 u32 43 nv50_lut_load(struct nv50_lut *lut, int buffer, struct drm_property_blob *blob, 44 void (*load)(struct drm_color_lut *, int, void __iomem *)) 45 { 46 struct drm_color_lut *in = blob ? blob->data : NULL; 47 void __iomem *mem = lut->mem[buffer].object.map.ptr; 48 const u32 addr = lut->mem[buffer].addr; 49 int i; 50 51 if (!in) { 52 in = kvmalloc_array(1024, sizeof(*in), GFP_KERNEL); 53 if (!WARN_ON(!in)) { 54 for (i = 0; i < 1024; i++) { 55 in[i].red = 56 in[i].green = 57 in[i].blue = (i << 16) >> 10; 58 } 59 load(in, 1024, mem); 60 kvfree(in); 61 } 62 } else { 63 load(in, drm_color_lut_size(blob), mem); 64 } 65 66 return addr; 67 } 68 69 void 70 nv50_lut_fini(struct nv50_lut *lut) 71 { 72 int i; 73 for (i = 0; i < ARRAY_SIZE(lut->mem); i++) 74 nvif_mem_fini(&lut->mem[i]); 75 } 76 77 int 78 nv50_lut_init(struct nv50_disp *disp, struct nvif_mmu *mmu, 79 struct nv50_lut *lut) 80 { 81 const u32 size = disp->disp->object.oclass < GF110_DISP ? 257 : 1025; 82 int i; 83 for (i = 0; i < ARRAY_SIZE(lut->mem); i++) { 84 int ret = nvif_mem_init_map(mmu, NVIF_MEM_VRAM, size * 8, 85 &lut->mem[i]); 86 if (ret) 87 return ret; 88 } 89 return 0; 90 } 91